Dust-guard for bearings.



1.; MORE'LAND. DUST GUARD FORBEARINGS, APPLICATION FILED IANJI. l9

"" Patented Mar. 5,1918

4 SHEETS-SHEET I.

"vi/Enron Jab L Maize/0nd ATTORNEYJ 1. H. MORELAND. DUST GUARD FOR BEARINGS.

v I APPLICATION FILED JAN-8. IQII- 1,258,600. 7 Patented Mar. 5,1918.

Q SHEETSSHEET 2.

INVENTOR (Kama/Mazda 4 Tron vs J. H. MORE'LAN'D. DUST GUARD FOR BEARING APPLICATION FILED JMLB.

'- Patented Mar. 5,, 1918.

4 SHEETS-SHEET 3.

. l l I I I I I II I 2 1/ riff!!! I 1h 1111 1111 11 I 11111111111111111111111111 1111111111111 11111 .111111111111111111111111117111111111111!!! INVENTOR' I fffl/ow/alzal nironylva J. H. MORELAND. DUST GUARD FOR BEARINGS.

' APPLICATION HLEDJAN-Q. I91]- I Patented Mar. 5, 1918.

4 SHEETS-SHEET 4.

ilzq.

ArromvEYd- UNITED STATES PATENT OFFICE.

JOHN H. M'OBELZAND, or moons, rnmtsrnvanm nusmapn son ammmes.

Speculation of Letters Patent.

Original application tiled April 25, 1911, Serial'lo. 823,218. Divided and this application illed January 8,

I 1917. lei-1118c. 141,148.

filed, April 25, 1911, for anti-friction bear d he objects ofthe present invention are to rovide an arrangement of dust guards for hearings in which an improved d'ust ard 1s 1; provided with means for automatica y com-.

'1 pensatin'g for wear between the rotating '20 member ofthe bearing and the dust guard; toprovide-janti-friction means between the dust guard and shaft, and to provide a dust guard free to'yield in' all d rections independently ofits supporting frame to prevent ucklin'g' or distortion of any .of the parts as a shaft or-Tiax le may move in I an eccentric path relative] to the support In this manner the gu'ardis always maintained in operative engagement with the shaftof the hearing and thus at all times eflicien'tly' prevents dust from entering the bearing or its associated. arts.-

Furt er objects of this invention are to provide a dust guard having a frame relatively fixed with respect to the relatively stationary bearing member and having a plate surrounding the shaft or journal and movable in accordance with any displacement of the axis thereof. This invention also has for. its object to provide said dust guards with separate split lates disposed upon opposite sides of the sliaft, each hav ing a semi-circular recess embracinr said shaft, and provided with undercut bull races whose over-hanging edges prevent displacement of said'balls when the dust guard members are removed from the shaft.

This invention also includes various detailed arrangements of construction hereinafter more specifically defined.

In the accompanying drawings, Figure l is a plan view of a bearing provided with my improved form of dust guard; Fig. 2 is division, 4 represents a casin 'siirroundi'ng access to the hearing may be had.

an elevational view of the dust guard, parts being broken away to more clearly show the I construction; Fig. 3 is a section on a line 33 of Fig. 2; Fig. 4 is a section on a line 4-4 of Fig. 2; Fig. 5 is a section taken on the line 5--5 of Fig. 2; Fig. 6 is a perspective view of the supporting frames of my improved dust guard; Figs. 7 and 8 impectively are perspective views of the. intermediate and inner frames and Fig.-9 is a perspective view of the dust guard plates which engage the rotating shaft of the bearteferring to the drawings, in Fig. 1 is shown a ournal bearing aving mg improved dust guards applied thereto, w erein ,Jj 1 .rep resents the axle or shaft, 2 the journal 0- and'-3 the roller bearing which may be f any c'onstrpction but as shown'indicates th: form of bearing claimed in my co-pe'ndin ap cationabove referred to of which t is 15'} the bca1'1ng,a nd:5 a car truck, ramc or other device which is to be supportedthereby. The casing 4 is provided w th grooves 6 which form convenient means, for su porting my improved dustiguard 7;. Additional 'dust guards, gencrally of a similar constructiohfQ numbered 8 and 9, may be located-within the journal hearing casing. The casing 4 is provided with n hinged end closure 10 whereby 1 8 Referring now to Figs. 2 to 9 inclusive, wherein the specific formof dust guard 7 is illustrated, 11 represents the outer rectangulnr frame which is located in the groove 6 of the casing 4. The frame 11 is provided with marginal flanges 12 adapted to engage the grooves 6 to hold said frame in the casing. The frame 11 has an; inwardly extending tongue 13 within which is mounted an intermediate relatively movable rectangular frame 14 having its opposite vertical side bars in slidablc engagement with the frame 11 and normally maintained centrally therein by flat springs 15 disposed between said outer frame and intermediate frame at the top and bottom thcrcof. Within the intermediate frame 14 is disposed an inner rectangular frame 16, which us its top'and bottom bars in slidable engagcmcnt with the top and bottom bars of 106 the intermediate frame 14, and is normally A pair of relatively movable sliding dust' guard members or plates 19 and 20 are mounted to slide vertically in the inner frame 16, and have lateral edges in slidable engagement with the vertical side bars of said inner frame 14, said plates 19 and 20 being rovidcd at their inner adjacent corners wlth recesses 21 adapted to receive the lugs 18 of the inner frame. Said plates are further provided at their outer corners, with recesses for the springs 22 which tend to shift the plates 19 and 20 constantly toward each other into engagement with the shaft 1 with which they engage.

Said springs 22 are held in effective position by means of bolts 23 which extend through the top and bottom bars of the inner frame 16 and through the margins of the plates 19 and 20 and the lugs 18, and are in threaded engagement with the lower bar of the frame 16, as clearly shown in Fig. 2.

1 The plates 19 and 20 constitute a dust guard element proper and are preferably formed, as shown in Fig. 9, of separate flat sheet metal plates 24 and 25 secured together by rivets 26, and have opposed semicircular recesses 27 and '28 to form a circular a ertur'e through which the. axle 1 extends.

ach of said plates 19 and 20 has an undercut ball race 29, which is formed by grooving the inner adjacent faces of the semi-circu lar edges of the respective plates 24 and 25, so that when the plates are riveted together the balls 30 are held therein by engagement of the over-hanging edges 31 thus formed.

Each of the plates 19 and 20 has an aperture 32 extending through said plates at the opposite ends of their respective ball races (see Figs. 9 and 2) for the insertion of a pin or other suitable implement, to prevent the escape of the balls 30 when the plates 19 and 20 are removed from the frame 18. a

The relatively movable dust guard membars or plates 19 and 20, the inner frame 18, and intermediate frame 14 are inclosed by the side plates 33 and 34 which are carried by the inner frame 14, being secured thereto by rivets 35 as clearly shown in Fig. 3. When the dust guard plates and frames are disposed within the outer frame 11 the marginal edges of the plates 33 and 34 engage on opposite facesof the marginal tongue 13 of the frame 11 and thus retain the dust guard in position relatively to the outer frame. A marginal space surrounds the perimeter of the outer plates 33 and 3-1 to permit the movement of these plates relatively to the outer frame 11, so that the dust guard with the plates may move with the axle l in an eccentric path without buc-- kling or in any way distorting the side plates 33 and 3%.

The plates 33 and 34 are provided with apertures 36 adapted to receive the shaft 1, and the outer plate 3t is provided with a pocket 37 surrounding the axle 1 and adapted to carry suitable oiled packing 38 to fur ther prevent the entrance of dust into the casing 4. The inner margin of the plate 3-1 prevents the oil from the packing 38 from escaping down into the dust guard frame but permits the same to be supplied to the ball race.

As the dust guards 8 and 9 are substantially similar in construction to the dust guard 7 which has been described in detail it is deemed unnecessary to specificall set forth the construction of these additional dust guards.

The operation of the improved device will be readily understood from the description of its construction. The plates 19 and 20 are constantly maintained in engagement with the rotating member of the bearing and the springs 22 take up any relative wear between the parts. The yieldingly supported double frame construction comprising the inner frame 16 and the intermediate frame 14 affords a dust guard support which will permit the dust guard member proper to shift in any lateral direction with the axle 1. The construction of the inner dust guard members 19 and 20, byreason of the ball race 29, forms a comparatively simple construction for retaining the balls 30 and also forms an anti-friction engagement between the dust guard and the rotating member of the bearing.

Although only one embodimentof my invention has been herein described, it is not desired to limit this invention to the specific details of construction and arrangement set forth as it is obvious that various modifications may be made without departmg from the essential features of the invention as defined in the appended claims.

Having described my invention I claim:

1. In a dust guard for journal bearings, thc'combination of relatively movable dust guard members adapted to surround the rotating member of the bearing, and means for yieldingly maintaining said movable members as a unit in operating engagement with said member, so as to permit said unit to move in all directions in a plane passing through said unit.

2- In a dust guard for journal bearings, the combination of a pair of relatively movable dust guard members adapted to engage the rotating member of the bearing and provided with nti-friction means for engagement therewith, and means for yield- 4.111 a dust guard for journal bearings,v

the combination of a pair of relatively movable dust ard members adapted to surround the ournal and provided with automatically operating wear compensating means, anti-friction means carried by saidmembers for engagement with said journal, and means for .yieldingly supporting said members so as to permit eccentric movement of the journal and members relative to said supporting means.

5. In a dust guard for journal bearing), the combination of a pair of relatively m0 able plates adapted to surround the Journal and provided with springs arranged to move said plates toward each other to compensate v for wear between the plates and the journal-,'. 'said plates being provided with anti-friction balls for engagement with the journal, and

means. or yieldingly supporting said plates to permit the shaft and plates to move in an eccentric path relative to said supporting means.

6. In a dust guard forjournal bearings, opposed plates adapted to engage the rotary member of the bearing and respectively l\aving undercut grooves surrounding said memher, and balls disposed in said grooves and retained therein by the opposed over-hanging edges of said plates.

I 7.In a dust guard for 'bearings, dust guard members having an aperture arranged to receive the rotary member of the bearing and comprising a central Wall having an undercut groove, balls disposed in said groove and surrounding said rotary member, a frame for said central wall, and yielding means in said frame arranged to permit the relative movement of said wall and frame.

8. A dust guard for bearings formed of relatively movable plates disposed on the opposite sides of the axle of said bearing and having a ball race surrounding said aperture and provided with undercut edges arranged to retain balls therein.

9. A dust guard comprising relatively movable plates disposed upon opposite sides of a shaft and having ball races surrounding said shaft with undercut edges arranged to retain the balls in said races and yielding means operative to retain said plates in engagement with said shaft.

1.0. An anti-friction bearing in a dust .of'balls surrounding the rotary member 0 guard comprising a frame, relatively movvided with ball races embracing the movable member of a bearing, and having undercut edges arranged to retain balls therein when the plates are removed from the bearing.

11. A dust guard for bearings comprising an outer frame in fixed relation with the bearing, an intermediate frame movable in said outer frame in one direction, an inner frame movable in said intermediate frame in a direction transverse to the movement of said intermediate frame, relatively movable plates mounted in said inner frame and having an aperture for the movable member of said bearing, and a ball race surrounding said aperture, and provided with undercut edges operative to retain balls, therein.

' able plates mounted in said frame and pro- 12. A dust guard for bearings comprising an outer frame mounted in stationary relation with said bearings, an intermediate frame movable in said outer frame and therein, relatively movable plates mounted in said inner frame and having opposed semi-circular recesses provided with undercut ball races arranged to retain a series said bearing, and yielding means tending to force said balls toward-said. member.

13. A dust guard comprising an outer frame, an intermediate frame movable in said outer frame,an inner frame movable in said intermediate frame and relative] movable platesarranged tobe dispose upon opposite. sides of the rotary member of a. bearing,means arranged to yieldingly maintain said frames and plates in operative po-..

sition and to permit an eccentric movement of said plates, and outer plates embracing ion said first-mentioned plates and. secured to the inner frame.

14. A dust guard for journal bearings comprisingan outer frame. an intet'media'te frame movable in said outer frame, an inner frame movable in said intermediate frame, and relatively movable plates arranged to be disposed on opposite sides of a rotating member in said caring, means arranged to yieldingly maintain said frames and plates in operative position and to permit an cecentric movement of saidplates and outer lates disposed on opposite sides of said first-mentioned plates secured to said inner frame, one of said outer plates being provided with a pocket arranged to maintain packing surrounding said rotating member. 15. In adust guard for journal bearing a frame for yieldingly supporting a pair 0 opposed plates, inwardly extending lugs on said frame, said plates having recesses for the reception of said lugs and a second set of recesses to form a space for the location of springs adapted to move said plates toward each other, and bolts for retaining said springs in osition and passing through the plates and ugs and secured to said frame.

16. In a-dust guard for bearings, a frame for securing said dust guard in position on said bearing, an inwardly extending marginal tongue on said frame, a pair of opposed plates adapted to engage'a rotar' member in said bearing and provided with means cooperating with said v tongue to maintain said plates in operative position.

17. In a dust guard for bearings, a frame for securing said dust guard in position on said bearing, an inwardly extending marginal tongue on said frame, a frame yieldingly supported between the opposite faces of said tongue, a dust guard supported by said inner frame and engaging a rotary member in said bearing, and plates con uected to said frame and overlapping said tongue and. dust guard member adapted to maintain the yie dingly supported frame and member in said outer frame. I

18. In adust guard for journal bearings,

a dust guard member engagipg a rotarybearing member and comprising a pair of plates juxta osed in face to face relationship, each 0 said plates provided with opposed undercut grooves in the edges which are adapted to' engage the rotating member, forming a ball. race retaining anti-friction balls therein. i

19. In a. dust guard for-journal bearings,

the combination of a support and a dust guard element adapted to surround a journal in the bearing and provided with antieccentric movement of the shaft and members relative to said supporting means.

21. In a dust guard for journal" bearings,

the combination of a supporting frame, a dust guard element adapted to surround a journal in the hearing within saidframe, means to yieldingly maintain said dust guard element in operative position in said rame to permit said element to move in all directions in the plane of said element and outer protecting plates extending over said frame and dust guard element to cover the joint between the same.

22. A dust guard for bearings comprising an outer frame in fixed relation with the bearing, an intermediate frame movable in said outer frame in one direction, an inner frame movable in said intermediate frame in a direction transverse to that of the movement of said intermediate frame and rela JOHN H. MORELAN D. 

